(function (line) {
    line.extend(line, {
        /**
         * Get the object keys.
         * @param {Object} obj
         * @return {Array}
         */
        keys:function (obj) {
            var result = [];
            line.each(obj, function (val, key) {
                result.push(key);
            });
            return result;
        },
        /**
         * Get the object values.
         * @param {Object} obj
         * @return {Array}
         */
        values:function (obj) {
            var result = [];
            line.each(obj, function (val) {
                result.push(val);
            });
            return result;
        }
    });
})(line);